Physics-
General
Easy
Question
A square loop of side 
is placed in the neighbourhood of an infinitely long straight wire carrying a current I1. The loop carries a current I2 as shown in figure
- The magnetic moment of the loop is
- The magnetic moment of the loop is
- The potential energy of the loop is minimum
- The torque experienced by the loop is maximum
The correct answer is: The magnetic moment of the loop is
Related Questions to study
physics-
Why was it important for Thomson to evacuate the air from the apparatus?
Why was it important for Thomson to evacuate the air from the apparatus?
physics-General
physics-
A rod AB moves with a uniform velocity v in a uniform magnetic field as shown in figure.
A rod AB moves with a uniform velocity v in a uniform magnetic field as shown in figure.
physics-General
physics-
In a region of space, a uniform magnetic field B exists in the y-direction. A proton is fired from the origin, with its initial velocity v making a small angle a with the y-direction in the yz plane. In the subsequent motion of the proton,
In a region of space, a uniform magnetic field B exists in the y-direction. A proton is fired from the origin, with its initial velocity v making a small angle a with the y-direction in the yz plane. In the subsequent motion of the proton,
physics-General
Physics-
Two charged particle A and B each of charge +e and masses 12 amu and 13 amu respectively follow a circular trajectory in chamber X after the velocity selector as shown in the figure. Both particles enter the velocity selector with speed 1.5 × 106 ms–1. A uniform magnetic field of strength 1.0 T is maintained within the chamber X and in the velocity selector.
Two charged particle A and B each of charge +e and masses 12 amu and 13 amu respectively follow a circular trajectory in chamber X after the velocity selector as shown in the figure. Both particles enter the velocity selector with speed 1.5 × 106 ms–1. A uniform magnetic field of strength 1.0 T is maintained within the chamber X and in the velocity selector.
Physics-General
physics-
A wire carrying I is shaped as shown. Section AB is a quarter circle of radius r. The magnetic field at C is directed
A wire carrying I is shaped as shown. Section AB is a quarter circle of radius r. The magnetic field at C is directed
physics-General
physics-
Figure shows a square current carrying loop ABCD of side 10 cm and current i = 10A. The magnetic moment 
of the loop is
Figure shows a square current carrying loop ABCD of side 10 cm and current i = 10A. The magnetic moment of the loop is
physics-General
physics-
A straight current carrying conductor is placed in such a way that the current in the conductor flows in the direction out of the plane of the paper. The conductor is placed between two poles of two magnets, as shown. The conductor will experience a force in the direction towards
A straight current carrying conductor is placed in such a way that the current in the conductor flows in the direction out of the plane of the paper. The conductor is placed between two poles of two magnets, as shown. The conductor will experience a force in the direction towards
physics-General
physics-
A rectangular coil PQ has 2n turns, an area 2a and carries a current 2I, (refer figure). The plane of the coil is at 60° to a horizontal uniform magnetic field of flux density B. The torque on the coil due to magnetic force is
A rectangular coil PQ has 2n turns, an area 2a and carries a current 2I, (refer figure). The plane of the coil is at 60° to a horizontal uniform magnetic field of flux density B. The torque on the coil due to magnetic force is
physics-General
physics-
A thin non conducting disc of radius R is rotating clockwise (see figure) with an angular velocity w about its central axis, which is perpendicular to its plane. Both its surfaces carry +ve charges of uniform surface density. Half the disc is in a region of a uniform, unidirectional magnetic field B parallel to the plane of the disc, as shown. Then,
A thin non conducting disc of radius R is rotating clockwise (see figure) with an angular velocity w about its central axis, which is perpendicular to its plane. Both its surfaces carry +ve charges of uniform surface density. Half the disc is in a region of a uniform, unidirectional magnetic field B parallel to the plane of the disc, as shown. Then,
physics-General
physics-
In the figure shown a coil of single turn is wound on a sphere of radius R and mass m. The plane of the coil is parallel to the plane and lies in the equatorial plane of the sphere. Current in the coil is i. The value of B if the sphere is in equilibrium is
In the figure shown a coil of single turn is wound on a sphere of radius R and mass m. The plane of the coil is parallel to the plane and lies in the equatorial plane of the sphere. Current in the coil is i. The value of B if the sphere is in equilibrium is
physics-General
physics-
A conducting ring of mass 2 kg and radius 0.5 m is placed on a smooth horizontal plane. The ring carries a current i = 4A. A horizontal magnetic field B = 10T is switched on at time t = 0 as shown in figure. The initial angular acceleration of the ring will be
A conducting ring of mass 2 kg and radius 0.5 m is placed on a smooth horizontal plane. The ring carries a current i = 4A. A horizontal magnetic field B = 10T is switched on at time t = 0 as shown in figure. The initial angular acceleration of the ring will be
physics-General
physics-
In given figure, X and Y are two long straight parallel conductors each carrying a current of 2 A. The force on each conductor is F newtons. When the current in each is changed to 1 A and reversed in direction, the force on each is now
In given figure, X and Y are two long straight parallel conductors each carrying a current of 2 A. The force on each conductor is F newtons. When the current in each is changed to 1 A and reversed in direction, the force on each is now
physics-General
physics-
A square loop ABCD, carrying a current i, is placed near and coplanar with a long straight conductor XY carrying a current I, the net force on the loop will be
A square loop ABCD, carrying a current i, is placed near and coplanar with a long straight conductor XY carrying a current I, the net force on the loop will be
physics-General
physics-
In the figure shown a current I1 is established in the long straight wire AB. Another wire CD carrying current I2 is placed in the plane of the paper. The line joining the ends of this wire is perpendicular to the wire AB. The force on the wire CD is:
In the figure shown a current I1 is established in the long straight wire AB. Another wire CD carrying current I2 is placed in the plane of the paper. The line joining the ends of this wire is perpendicular to the wire AB. The force on the wire CD is:
physics-General
physics-
A circular current loop of radius a is placed in a radial field B as shown. The net force acting on the loop is
A circular current loop of radius a is placed in a radial field B as shown. The net force acting on the loop is
physics-General
